I. Product description

VOC gas detector is suitable for continuous online detection of VOC concentration in various industrial environments and special environments, which plays an early warning role in the operation safety of dangerous sites. The instrument adopts imported electrochemical sensor and microcontroller technology, which has the advantages of stable signal, high precision and good repeatability. The explosion-proof connection mode is suitable for all kinds of dangerous places. With the signal transmitter and signal receiver, it can realize remote synchronous wireless transmission of data, real-time monitoring and storage of data in the computer, which can save a lot of installation costs for users. With gas control alarm host can also realize the remote display, control, alarm and other functions.

Two, instrument characteristics

① It adopts the semiconductor nano process ultra-low power 32-bit microprocessor and the best 24-bit ADC data acquisition chip

② Use 2.4 inch industrial high definition color screen, resolution 320x240

③ The concentration units of PPM, %VOL and mg/m3 can be switched freely

④ The lower limit of instrument detection: 0.001ppm, the upper limit of detection: 99.999%VOL, depending on the specific sensor

⑤ Can output a variety of signals at the same time: 4-20mA, RS485, 0-5V, frequency signal, switching signal

⑥ A variety of signal transmission options: 3-4 core cable, optical fiber, network cable, 3G transmission, wireless transmission, video transmission

⑦ with status indicator function, with 4 groups of LED status indicator

⑧ with life detection function, real-time, automatic detection of sensors, the main chips, components of the working state

⑨ Provides overvoltage protection, lightning protection, short circuit protection, reverse connection protection, anti-static interference, and anti-magnetic interference

And has the automatic recovery function, to prevent the occurrence of any external causes, human causes, natural disasters caused by the damage of the instrument

⑩ Software automatic calibration, sensors up to 6 level target point calibration function, to ensure the accuracy and linearity of measurement

⑩ Chinese/English operation menu, simple and practical, a total of standard four-way buttons for on-site operation

The instrument can be optional: temperature, humidity sensor, on-site sound and light alarm and other functions

The instrument can also be equipped with infrared remote control to operate the instrument without opening the cover

Iii. Technical parameters:

Detection gas:

Total volatile organic gas (VOC), using imported PID photoion/electrochemical/semiconductor sensor, the service life is up to 3 years.

Measurement range: 0-10, 50, 100, 200, 1000, 2000, 6000, 10000PPM Optional

Resolution: 0.01PPM (0-100PPM), 0.1PPM (0-1000PPM), 1PPM (0-10000PPM)

Installation method:

Wall-mounted, pipe type (thread size :M40X1.5mm), flow type and pump type are optional

Detection accuracy: ≤±3%

Linear error: ≤±1%

Response time: ≤20 seconds (T90)

Zero drift: ≤±1% (F.S/ year)

Recovery time: ≤20 seconds

Repeatability: ≤±1%

Signal output:

① 4-20mA signal: standard 16-bit precision 4-20mA output chip, transmission distance 1Km

(2) RS485 signal: Standard MODBUS RTU protocol, transmission distance of 2Km

③ Voltage signal: 0-5V voltage signal output

Pulse signal: also known as frequency signal, frequency range is adjustable

⑤ Switching signal: 2-3 groups of relays, passive galvanic capacity 220VAC 3A, 24VDC 3A

Transmission mode:

① Cable transmission: 3-core, 4-core cable, long-distance transmission (1-2 km)

② TCP/IP transmission: Support TCP/IP protocol, using optical fiber, network cable, through the Intranet, Internet long-distance transmission (optional)

3G transmission: Built-in 3G module, real-time remote data transmission, not limited by distance (optional)

(4) Wireless transmission: Support 433Mhz, radio transmission mode, transmission distance of 2-10Km, depending on the power (optional)

⑤ Video transmission: can support security monitoring camera, when the equipment alarm scene capture, evidence (optional)

Alarm mode:

① Comes with 2-3 groups of relay output, high and low alarm mode can be adjusted, but also can set interval control, interval alarm

② with sound and light alarm, on-site alarm, on-site control

(3) With control alarm, remote alarm, remote control

(4) Optional SMS alarm, the alarm signal will be notified to the person in charge by mobile phone SMS

⑤ Access the fire control host and remote control platform for remote alarm and remote monitoring

Connection mode:

3/4 "NPT internal thread, 1/2" NPT internal thread, at the same time support two kinds of electrical connection

Explosion-proof mark: ExdII CT6

Shell material:

Die cast aluminum + sand blasting oxidation, explosion proof and corrosion proof

Protection level:

IP65

Operating temperature:

-30 ~ 50℃

Working power supply:

24VDC (9 ~ 30VDC)

Working humidity:

≤95%RH, no condensation

Size and weight:

170×140×80mm (L×W×H)

1.5Kg (net weight of instrument)

Working pressure:

-30 kpa to 100Kpa

Standard parts:

Specification, certificate, calibration cover

Optional accessories:

① 5*8mm hose, drying cylinder, oil and water separator, air pumping pump

(2) Infrared remote control, no open cover remote control operation of the instrument

③ Temperature and humidity sensor, SMS alarm, 3G module, wireless transmission module